|  | 6.4 | Extended ACLs
| 6.4.3 | UDP and TCP port numbers

Destination and source addresses or specific protocols using extended ACLs need to be identified with numbers in the range 100 to 199. Upper-level TCP or UDP port numbers in addition to the other tests in extended ACLs need to be identified, with a number in the range 100 to 199. Some of the reserved UDP and TCP port numbers are shown in the table.